CONCEPT: Heat can move from one object to another by conduction.
CONTENT OBJECTIVE: 2C4.00 To understand how heat is transferred by conduction
INSTRUCTIONAL OBJECTIVE: The learner will:
4.01 observe that heat can transfer from one object to another.
OUTLINE OF CONTENT:
I. Cooking experiment
II. Air, water and solids experiment
III. Heat transfer drawings
TN COMPONENT OF SCIENCE: Habits of Mind
TN GOAL:
To enable students to demonstrate ways of thinking and acting inherent on the practice of science; and to exhibit an awareness of the historical and cultural contributions to the enterprise of science.
TN THEME:
3.1 HISTORICAL AND CULTURAL PERSPECTIVE - The knowledge and processes of science have evolved over time as an approximation of truth within cultural contexts.
TN STANDARD(S): The learner will understand that:
3.1a Although some scientific knowledge is very old, it is still applicable today.
BENCHMARK: When established scientific investigations are repeated,
predictable results are expected.
CLASSROOM CONNECTORS
TIME REQUIRED:
Two instructional periods
MATERIALS:
Hot dogs, hot plate, pan of water, buns, crayons, drawing paper,
SET:
(Have container of hot water with a metal spoon sitting in it for 5-10 minutes.) (Show the water and spoon.) This is very hot water with a spoon in it. Thumbs up if you think the spoon will be warm. (response) Yes, the spoon is warm. (Let students feel the spoon.) We are going to study about how heat moves.
INSTRUCTION:
Heat moves through some objects by conduction. One part gets warm and it touches another part that gets warm until it is all warm. I want the first people on each row to wiggle their fingers. Keep wiggling and the next person on row wiggles theirs until everyone has wiggling fingers. (Allow students time to do this.) Stop. This is the way heat moves.
SUPERVISED PRACTICE:
One important way we use moving heat by conduction is by cooking: (Have hot dogs in package) How do hot dogs feel now? (cold) We will put them in hot water for a few minutes. (Take out and put on a bun) How do not dogs feel now? (Hot) Yes, the heat moved from the coil to the pan to the water to the hot dog by conduction.
CLOSURE:
When we cooked the hot dogs, what happened to the hot dogs? (response) Yes the hot dogs temperature changed from cold to hot. Tell your neighbor how the hot dog got warm. When you go home and put the hot dog in water to cook, what will your results be? (response)
INDEPENDENT PRACTICE:
Draw a picture of something in your house that transfers heat. Please label it and I will check it.
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